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Revenue - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 26, 2021
Jun. 27, 2020
Jun. 26, 2021
Jun. 27, 2020
Revenue from Contract with Customer [Abstract]        
Revenue, Remaining Performance Obligation, Amount $ 804,400,000   $ 804,400,000  
Contract with Customer, Liability, Revenue Recognized $ 20,100,000 $ 18,000,000.0 $ 100,900,000 $ 95,500,000